[Bindings] Remove a redundant option write-file-if-only-changed in bindings

third_party/WebKit/Source/bindings/scripts/compute_interfaces_info_overall.py

 #!/usr/bin/python
 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
@@ skipping 95 matching lines @@
 
 
 class IdlInterfaceFileNotFoundError(Exception):
     """Raised if the IDL file implementing an interface cannot be found."""
     pass
 
 
 def parse_options():
     usage = 'Usage: %prog [InfoIndividual.pickle]... [Info.pickle]'
     parser = optparse.OptionParser(usage=usage)
-    parser.add_option('--write-file-only-if-changed', type='int', help='if true, do not write an output file if it would be identical to the existing one, which avoids unnecessary rebuilds in ninja')
 
-    options, args = parser.parse_args()
-    if options.write_file_only_if_changed is None:
-        parser.error('Must specify whether file is only written if changed using --write-file-only-if-changed.')
-    options.write_file_only_if_changed = bool(options.write_file_only_if_changed)
-    return options, args
+    return parser.parse_args()
 
 
 def dict_of_dicts_of_lists_update_or_append(existing, other):
     """Updates an existing dict of dicts of lists, or appends to lists if key already present.
 
     Needed for merging partial_interface_files across components.
     """
     for key, value in other.iteritems():
         if key not in existing:
             existing[key] = value
@@ skipping 175 matching lines @@
         del interface_info['is_legacy_treat_as_partial_interface']
 
     # Compute global_type_info to interfaces_info so that idl_compiler does
     # not need to always calculate the info in __init__.
     compute_global_type_info()
 
 
 ################################################################################
 
 def main():
-    options, args = parse_options()
+    _, args = parse_options()
     # args = Input1, Input2, ..., Output
     interfaces_info_filename = args.pop()
     info_individuals = read_pickle_files(args)
 
     compute_interfaces_info_overall(info_individuals)
-    write_pickle_file(interfaces_info_filename,
-                      interfaces_info,
-                      options.write_file_only_if_changed)
+    write_pickle_file(interfaces_info_filename, interfaces_info)
 
 
 if __name__ == '__main__':
     sys.exit(main())